1. Sanitary, non-toxic, no heavy metal additives, directly apply to the water supply system.2. Heat insulation and Saving Energy: low thermal conductivity which is only 1/1500 of brass pipe, and 1/250 of steel pipe.3.Non-toxic: no heavy metal additives would not be covered with dirty or contaminated by bacterium.4. Light weight, high strength and high impact strength.5. Lower Installation Costs: light weight and good hot-melt performance can reduce installation costs by as much as 50% over metal piping system.6. Convenient installation, reliable, recycled, environmental protection and safe.7. Corrosion Resistant: resist chemical matters or electron chemical corrosion.8. High Temperature Resistance: the maximum sustained working temperature is up to 70 Degrees Celsius, the maximum transient temperature is up to 95 Degrees Celsius.9.Higher Flow Capacity: smooth interior walls result in lower pressure loss and higher volume than metal pipes.10. Long service life: more than fifty years under the normal pressure and temperature.